In the video titled “Most people don’t know this, how to use a speed square, the ultimate guide,” James Gatlin breaks down the essentials of one of the most versatile tools in construction. A speed square is not just a tool; it becomes a reliable companion for anyone serious about woodworking or construction.
Understanding the Basics of the Speed Square
The speed square is a staple in any handyman’s toolbox. Once mastered, it showcases its versatility, impressing anyone who witnesses its capabilities. The most common use for a speed square is to make a straight line that is perpendicular to a surface. This flat surface, known as the lip, should be placed flush against the material. By marking a line along the edge, users achieve a perfect 90° angle.
Marking Angles with Precision
Not only can the speed square mark a 90° angle, but it can also be used to mark a 45° angle and any other angle desired. Most speed squares feature a pivot point at the corner, which is the point used to find and mark the desired angle. For instance, to mark a 20° angle, one must pivot the square until it aligns with the material edge, drawing a line from the pivot point across the side.
Using a Level with Your Speed Square
Combining the speed square with a level allows users to determine the angle of a material relative to level. To do this, place the level on the lip of the speed square and align the pivot point against the material. This combination can also utilize a plum weight, which is essential to know about.
While level indicates horizontal alignment, plum refers to a perfect vertical alignment. By using a plum line with the square, users can achieve multiple functions, including leveling, without needing a separate level tool.
Utilizing the Scribe Feature
Many speed squares come with a scribe feature, often in the form of notches that are perpendicular to the lip. To use this, place the lip on the material, insert a pencil into the notch, and slide the square across the material. This method is especially useful for ripping boards or making reference lines.
The Rafter Square: A Unique Application
The speed square is also known as a rafter square, primarily used to measure and cut rafters. Understanding pitch—defined as the height relative to a 12-inch horizontal run—is crucial. For example, a 6-inch pitch means a diagonal line of 12 inches in length and 6 inches in height. Once the pitch is established, users can effectively cut rafters by marking the appropriate angles on the material.
Making Repetitive Marks and Checking Angles
The speed square is excellent for making repetitive marks, with many models featuring predetermined marks to facilitate this process. For example, there’s often an arrow indicating 1.5 inches, the thickness of a standard 2×4. This feature allows quick marking of rafter positions and ensures they square up with the plate.
Final Thoughts on Speed Square Mastery
Whether it’s checking angles on cutting tools or ensuring materials are properly aligned, the speed square is an invaluable tool for any project. By understanding and mastering this tool, users can enhance their woodworking and construction skills significantly.